Adjustable journal-bearing



(No Model.)

B. W. MGGUIRE.

ADJUSTABLE JOURNAL BEARING. No. 514,331. Patented Feb; 6, 1894.

UNITED STATES PATENT OFFICE.

ELWOOD W. MCGUIRE, OF RICHMOND, INDIANA.

ADJUSTABLE JOU RNAL-BEARING.

SPECIFICATION formingpart of Letters Patent No. 514,331, dated February6, 1894.

Applicationfiled September 22, 1893. Serial No. 486,231. (No model.)

To all whom it may concern.-

Be it known that I, Enwoon W. MCGUIRE, a citizen of the United States,residing at Richmond, in the county of Wayne and State of Indiana, haveinvented certain new and useful Improvements in Adjustable Journal-Bearings for Lawn-Mowers, of which the following is a specification.

The object of my invention is to provide an improved adjustable journalbearing for the knife axis.

The various features of my improvement are fully set forth in thedescription of the accompanying drawings making a part of thisspecification, in which- Figure l is a plan view of a lawn mower with myimprovement attached. Fig. 2 is an inside plan view of the head plate.Fig. 3 is an enlarged plan view of the journal bearing. Fig. 4 is asection on line so, m, Fig. 3. Fig. 5 is a section on line y, y, Fig. 4.Fig. 6 is a modification of Fig. 5.

A. represents the roller in rear of the knife bearing. B, B, the grounddriving wheels. C the head plate. D a brace rod secured to the orificesd in the head plate 0. E the axis of the knife blades, which isconstructed in the usual manner.

My improvement relates to the journal for the axis; in the operation oflawn mowers the strain and wear are upon the forward and upward side ofthe journahto take up lost motion and keep the journal bearing true byadjustment from time to time I construct the same as follows: Frepresents a split box inserted in the housing or hub a of the headplate; it is provided with an anchoring lug c, and an adjusting lug bwhich lies loosely in the recess e; the anchoring lugc fitting closelyin the recess on the opposite side of the hub a; g, g representadjusting screws bearing against the lug b on each side.

The journal box is adjusted to fit the axis in the following manner:Said screw 9 is slackened; set screw 9 is turned down; it bears upon thelug b, the anchoring lug 0 holds the split box firmly in position on oneside, allowing the opposite or split side to yield contracting thecircle of the boxing, and bringing it to the size of the shaft. If theboxing is unduly clamped the screw 9 is slackened, set screw 9 turned upexpanding the boxing.

Vice upon one side of the boxing is immaterial so long as it is firmlyheld to the head plate or housing at one side, and means for compressionor expansion of the circle of the box are provided on the opposite side.

K represents the lug for supporting the roller. L the adjusting log inwhich the stationary knife bears. These last named parts may be of theusual construction.

Having described my invention, what I claim is l. The combination withthe head-plate 0 provided with a hub at having a recess, of the elasticsplit journal-box F formedoi a single piece and having an anchoring lugc engaged with the said recess in the journal-box, and means forcompressing the split journal-box, substantially as described.

2. In combination with the head-plate 0 provided with a hub, having anupper and lower recess, the split journal-bearing F provided with ananchoring lug c, firmly seated in said lower recess, and an adjustinglug 6, supported in the upper recess, substantially as described.

3. In combination with the head plate C provided with a hub, having anupper recess e, and a lower dove-tailed recess, the split j ournalbearing F, provided with a dove-tailed anchoring lug c, firmly seated insaid lower recess, and an adjusting lug b, movably supported in saidupper recess, and set screws bearing against the opposite sides of saidlug, substantially as described.

In testimony whereof I have hereunto set my hand.

ELWOOD w. McGUIRE.

Witnesses:

HENRY O. STARR, OTTO H. Sraone.

